Gasifier combustor

A burner, gasifier technology, applied in burners, gas fuel burners, combustion methods, etc., can solve the problems of complex operation, difficult sealing problems, large investment costs, etc., to achieve pressure balance, ensure service life, guarantee The effect of ignition reliability

Inactive Publication Date: 2014-05-28
CHANGZHENG ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in order to prevent the ablation problem of the ignition rod in the industry, a movable ignition rod is used. When the ignition rod is working, it extends out of the burner, and when it is not working, it shrinks into the inside of the burner. This ignition method has high investment costs, complicated operation, and high temperature The sealing problem under high pressure is also more difficult to solve

Method used

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  • Gasifier combustor

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Embodiment Construction

[0032] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0033] See figure 1 , The start-up preheating burner of the gasifier using combustible gas as fuel of the present invention includes the ignition rod 3, the central tube 11, the inner tube 12, the middle tube 13 and the outer tube 14 coaxially arranged from the inside to the outside, It constitutes the main structure of the preheating burner of the gasifier. And the burner is connected to the furnace body or process burner ( figure 1 Not shown) The sealed connection is fixed. The internal pipeline connection of the combustor is completed by welding the sealing cover plate 19, or a sealed flange connection structure can be used. Each part can not only be disassembled and repaired separately, but also will not affect other parts.

[0034] The ignition rod 3 and the central tube 11 constitute an ignition fuel gas channel 5, the ignition rod 3 is arranged in the c...

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Abstract

The invention relates to a combustor used for a gasifier and started and preheated by adopting combustible gas as fuel. The gasifier combustor is characterized in that a central tube, an inner tube, a middle tube and an outer tube are sequentially arranged at the center of the combustor from inside to outside, and medium channels are formed in the space among the ignition rod and the tubes and includes an ignition fuel gas channel, an ignition oxidant channel, a starting-up fuel gas channel and a starting-up oxidant channel. The gasifier combustor is characterized in that the central tube and the ignition rod are arranged inside the inner tube which is connected with a stable-combustion device; the ignition is arranged in the position capable of avoiding being combusted and eroded by high-temperature flame; the stable-combustion device forms a partial combustion chamber for ignition fuel gas, so that ignition flame can combust reliably, ignition of starting-up fuel gas can be ensured to be successful, and ignition reliability and starting-up flame stability can be guaranteed; shielding gas is replaced during starting up, so that internal and external pressure can be balanced, high-temperature flue gas cannot backflow to the channels of the combustor, and service life of the combustor is prolonged.

Description

Technical field [0001] The invention relates to a burner for a gasification furnace, in particular to a burner for the start-up preheating of a gasification furnace. Background technique [0002] In the existing coal gasification plant, the main fuel is mostly dry coal powder or coal water slurry. Regardless of the physical state of the coal, the success rate of directly igniting it with a high-temperature flame is low. At present, the more mature ignition scheme is "three-stage ignition". The process is as follows: firstly, the gas fuel which is easy to catch fire is directly ignited in the ignition burner to form a high-temperature flame, and the starting burner is ignited by the flame, and The gasifier boosts the load, and finally preheats the gasifier to a high temperature and medium pressure state, and then feeds coal through the process burner. The coal enters the gasifier and encounters high temperature environment and oxidant and ignites spontaneously after reaching ignit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/02F23D14/46
Inventor 王明坤姜从斌郭进军信伟周勇马冬
Owner CHANGZHENG ENG
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